The fang radical and the fang kanji are exactly the same! Fantastic. Oh, also it means tusk. It means fang and tusk.
Lots of animals have fangs, even ones that don't look like they do. The coolest fang-having animal is the gecko (げ)! They have pretty sharp little fangs in their mouths and they'll bite you if you keep tapping their glass cages like that. Cut it out.